[    2.044835] ip (249) used greatest stack depth: 12368 bytes left
[    2.367041] ip (271) used greatest stack depth: 12320 bytes left
[   54.403830] netem: version 1.3
[  415.064480] ip (6866) used greatest stack depth: 12048 bytes left
[  603.145445] tc (11920) used greatest stack depth: 11872 bytes left